Hi, i´m not usual in Theravada but i do know about the 8 janas. These eight jhnas are also refered in the Dighanikayo, the longer collection of the three books. What a theravada should consider, that the sixth jana, there are two more behind nibbanam. literature Neumann, Kar-Eugenie Reden Gotamo Buddhos, Dighanikayo, S. 260, Shri Lanca edition in Pali,page 141. anando